US4886900A - Tetrakis(3-(3,5-di-tert.buyl-4-hydroxyphenyl)propionyl-oxymethyl) methane with amorphous structure, process for its preparation and its use as a stabilizer - Google Patents

Tetrakis(3-(3,5-di-tert.buyl-4-hydroxyphenyl)propionyl-oxymethyl) methane with amorphous structure, process for its preparation and its use as a stabilizer Download PDF

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Publication number
US4886900A
US4886900A US07/074,561 US7456187A US4886900A US 4886900 A US4886900 A US 4886900A US 7456187 A US7456187 A US 7456187A US 4886900 A US4886900 A US 4886900A
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United States
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tert
oxymethyl
propionyl
methane
hydroxyphenyl
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US07/074,561
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Carlo Neri
Nereo Nodari
Giovanni Sandre
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ENICHEM SYNTHESIS SpA AN ITALIAN Co
Enichem Sintesi SpA
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Enichem Sintesi SpA
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Assigned to ENICHEM SINTESI S.P.A. reassignment ENICHEM SINTESI S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NERI, CARLO, NOTARI NEREO, SANDRE, GIOVANNI
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Assigned to ADDIVANT USA, LLC reassignment ADDIVANT USA, LLC RELEASE OF SECURITY INTEREST RECORDED AT REEL 030872 FRAME 0810 Assignors: WELLS FARGO BANK
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/04—Saturated compounds containing keto groups bound to acyclic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C08K5/134—Phenols containing ester groups
    • C08K5/1345—Carboxylic esters of phenolcarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/66—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
    • C07C69/73—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of unsaturated acids
    • C07C69/732—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of unsaturated acids of unsaturated hydroxy carboxylic acids

Definitions

  • the present invention relates to tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane with amorphous structure, to the process for preparing it and to its use as a stabilizer, in particular for organic polymers.
  • Tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane is a compound having the formula: ##STR1## useful as a stabilizer for the organic materials, in particular the organic polymers, which undergo oxidative degradation due to the action of light and/or of heat, such as, e.g., disclosed in U.S. Pat. No. 3,644,428.
  • tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]-methane are known, such as, e.g., those marketed by Ciba-Geigy under the trade name Irganox® 1010 and those sold by the Italian company Bozzetto under the trade name Anox® 20.
  • the method generally used for the production of tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]-methane consists in transesterifying methyl and ethyl 3-(3,5-di-tert.butyl-4-hydroxyphenyl)propionate ##STR2## (wherein R is the methyl or ethyl group) with pentaerythritol, operating in the presence of a transesterification catalyst, as disclosed in the above cited U.S. Pat. No. 3,644,428.
  • Tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane as obtained from the transesterification reaction, can be a glassy solid with a softening point of 50°-60° C., or a solid melting at 80°-90° C. They are mostly impure or coloured products, unacceptable on the market.
  • the known commercial products tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane are crystalline solids, which can exist in various allotropic forms and which show melting temperatures within the range of from 110° to 125° C.
  • the high melting point of tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane constitutes a problem as relates to the stabilization of the organic polymers in those applicative sectors wherein the polymer is processed at relatively low temperatures, as in case of blow moulding of high-density polyethylene, and in the processing of natural rubber.
  • tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]-methane does not melt, and hence cannot perform its stabilizing action, or it melts only partially, generating problems of inhomogeneity of distribution, with the consequent formation of fragile regions in the end article obtained, due to the presence of segregated crystals.
  • the present invention relates to a process for the preparation of tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane with an amorphous structure, stable, and with low softening point, essentially consisting in melting crystalline tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane and solidifying the molten material by submitting it to a sudden cooling.
  • the present invention relates to tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane with amorphous structure, characterized in that it shows a glass transition temperature (T g ) comprised within the range of from about 40° C. to 50° C. and is free from endothermic melting peaks at temperatures higher than 50° C.
  • T g glass transition temperature
  • amorphous it is herein meant that the tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]-methane according to the present invention does not show a diffraction spectrum on X-ray analysis, as carried out by means of a Philips powder goniometer, by using the CuK ⁇ radiation and a nickel filter.
  • the amorphous tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane according to the present invention can be used for stabilizing any organic polymers against the oxidative degradation caused by light and/or heat, such as, e.g.: vinyl polymers, olefinic polymers, diolefinic polymers, polymeric alloys, ABS, etc.
  • the present invention relates to stabilized polymeric compositions which comprise an organic polymer and a stabilizing amount of amorphous tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane according to the present invention.
  • a further aspect of the present invention consists in the preparation of amorphous tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]-methane, which consists essentially in heating crystalline tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]-methane above its melting point, and suddenly cooling the so-obtained molten material.
  • tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]-methane having such melting temperatures has a purity which is generally higher than 95% by weight.
  • the sudden cooling suitable for causing a quick solidification of the molten material, can be obtained by any methods known in the art.
  • the preferred methods consist in pouring the molten material on a cold metal sheet, e.g., at a temperature equal to or lower than room temperature; in pouring the molten material into water or in another non-reactive, cold liquid, e.g., kept at room temperature or lower then room temperatures; in cooling the molten material as drops inside a gas (e.g., nitrogen), by a technique similar to the prilling technique.
  • a gas e.g., nitrogen
  • Crystalline tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane a commerical product marketed under the trade name ANOX.sup.(R) 20 by Bozzetto (Italy) is used; it has a purity of 98.5% by weight, and a melting point of 122.5° C.
  • This product was obtained by transesterifying methyl 3-(3,5-di-tert.butyl-4-hydroxy-phenyl)-propionate with pentaerythritol, in the presence of a transesterification catalyst and crystallizing the raw reaction product from an organic solvent.
  • ANOX 20 250 g is charged to a glass reactor of 1 l of capacity, equipped with mechanical stirrer, and with a jacket for enabling the circulation of the heating fluid.
  • the temperature is increased to 140° C., with the processed mass being kept stirred and under a nitrogen atmosphere.
  • the mass is completely molten, it is poured on an aluminum sheet of 50 x 50 cm, maintained at room temperature (20°-25° C.).
  • the sample is sealed inside an aluminum capsule, and is introduced inside the sample-holder of the instrument (Mettler TA 3000 with Mettler TC 10 processor) and heated under nitrogen at the rate of 10° C./minute up to 100° C.; it is then kept at this temperature 15 minute long, and is finally cooled to -100° C.
  • an endothermic peak is observed, which is centered at 48° C. (FIG. 1A); during the cooling step, such endothermic peak is observed at 39.1° C.
  • FIG. 3 shows the diffractogram of the crystalline product ANOX® 20 before being treated.
  • the ground sample is pressed into tablets with KBr and its IR absorption spectrum is recorded.
  • the IR absorption spectrum is reported in FIG. 4, wherein a lower resolution of the bands can be observed, relatively to those of the crystalline product ANOX® 20 (FIG. 5); this lower resolution is typical of a not-organized system; the same hydroxy band results broader, with a component at 3500 cm -1 .
  • Amorphous tetrakis[3-(3,5-di-tert.butyl-4-hydroxyphenyl)-propionyl-oxymethyl]methane is obtained as beads of about 5 mm of size.
  • 200 g of molten crystalline ANOX® 20 at 140° C. is dropped through an electrically heated capillary (inner diameter 1 mm) at the top of a glass tube 2 m long, and of 20 cm of diameter, filled with nitrogen gas, which is flown into the tube from its bottom, at a flowrate of 200 litre/hour.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Anti-Oxidant Or Stabilizer Compositions (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
US07/074,561 1986-07-25 1987-07-17 Tetrakis(3-(3,5-di-tert.buyl-4-hydroxyphenyl)propionyl-oxymethyl) methane with amorphous structure, process for its preparation and its use as a stabilizer Expired - Lifetime US4886900A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21258A/86 1986-07-25
IT8621258A IT1213462B (it) 1986-07-25 1986-07-25 Quale stablizzante tetrakis[3-(3,5-di-t-butil-4-idrossifenil)propionilossimetil]metano con struttura amorfa,procedimento per la sua preparazione e suo uso

Publications (1)

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US4886900A true US4886900A (en) 1989-12-12

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ID=11179149

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US07/074,561 Expired - Lifetime US4886900A (en) 1986-07-25 1987-07-17 Tetrakis(3-(3,5-di-tert.buyl-4-hydroxyphenyl)propionyl-oxymethyl) methane with amorphous structure, process for its preparation and its use as a stabilizer

Country Status (17)

Country Link
US (1) US4886900A (ja)
EP (1) EP0255743B2 (ja)
JP (1) JPS6335544A (ja)
KR (1) KR900003300B1 (ja)
CN (1) CN1021321C (ja)
AT (1) ATE66460T1 (ja)
BR (1) BR8704156A (ja)
CA (1) CA1282427C (ja)
DE (1) DE3772291D1 (ja)
DK (1) DK380087A (ja)
ES (1) ES2026521T3 (ja)
GR (1) GR3002633T3 (ja)
IN (1) IN170211B (ja)
IT (1) IT1213462B (ja)
NO (1) NO167567C (ja)
RU (1) RU1795964C (ja)
ZA (1) ZA875316B (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0514784A1 (en) * 1991-05-17 1992-11-25 GREAT LAKES CHEMICAL ITALIA S.r.l. Process for granulating additives for organic polymers

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0366808B1 (en) * 1988-03-31 1994-06-15 Yoshitomi Pharmaceutical Industries, Ltd. Method of crystallization and purification for obtaining stable crystalls of tetrakis 3-(3,5-di-tertiary-butyl-4-hydroxyphenyl)propionyloxymethyl- methane on an industrial scale
JPH052614U (ja) * 1991-06-25 1993-01-19 三菱農機株式会社 植付け機における植付け部のシユーターの取付け構造
BR9808874B1 (pt) 1997-04-15 2010-07-13 processo para a preparação de um estabilizador com formação de pó reduzida.
IT1300058B1 (it) * 1998-04-23 2000-04-05 Great Lakes Chemical Italia Modificazione cristallina di miscele di un nichel-quencher e di un benzofenone e procedimento per la sua preparazione

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4683326A (en) * 1985-07-19 1987-07-28 Ciba-Geigy Corporation Solvent-free crystallization of pentaerythritol tetrakis-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and the novel alpha-crystalline form thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH454171A (de) * 1964-06-02 1968-04-15 Geigy Ag J R Verfahren zur Herstellung organischer Ester
JPS6013018B2 (ja) * 1980-04-01 1985-04-04 三井化学株式会社 新規な結晶構造を有するテトラキス〔３−（３，５−ジ−ｔ−ブチル−４−ヒドロキシフエニル）プロピオニルオキシメチル〕メタン
JPS59104348A (ja) * 1982-12-03 1984-06-16 Sumitomo Chem Co Ltd 球状もしくは半球状のテトラキス〔３―（３，５―ジ―ｔ―ブチル―４―ヒドロキシフェニル）プロピオニルオキシメチル〕メタンの製造方法
US4594444A (en) * 1983-12-22 1986-06-10 Ciba-Geigy Corporation Process for the preparation of sterically hindered hydroxyphenylcarboxylic acid esters

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4683326A (en) * 1985-07-19 1987-07-28 Ciba-Geigy Corporation Solvent-free crystallization of pentaerythritol tetrakis-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and the novel alpha-crystalline form thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0514784A1 (en) * 1991-05-17 1992-11-25 GREAT LAKES CHEMICAL ITALIA S.r.l. Process for granulating additives for organic polymers

Also Published As

Publication number Publication date
DE3772291D1 (de) 1991-09-26
CN1021321C (zh) 1993-06-23
IT8621258A0 (it) 1986-07-25
IT1213462B (it) 1989-12-20
KR900003300B1 (ko) 1990-05-14
ES2026521T3 (es) 1992-05-01
EP0255743A1 (en) 1988-02-10
CN87105141A (zh) 1988-05-11
NO167567C (no) 1991-11-20
KR880001563A (ko) 1988-04-25
JPS6335544A (ja) 1988-02-16
DK380087D0 (da) 1987-07-21
RU1795964C (ru) 1993-02-15
CA1282427C (en) 1991-04-02
IN170211B (ja) 1992-02-29
NO873090L (no) 1988-01-26
GR3002633T3 (en) 1993-01-25
DK380087A (da) 1988-01-26
ATE66460T1 (de) 1991-09-15
NO167567B (no) 1991-08-12
EP0255743B2 (en) 2000-05-03
NO873090D0 (no) 1987-07-23
BR8704156A (pt) 1988-04-12
ZA875316B (en) 1988-01-26
EP0255743B1 (en) 1991-08-21

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